Any experiences with a Canon EF 100mm f/2.8 USM Macro on a 400D ?

Discussion in 'Photography Equipment & Products' started by wise, Dec 16, 2008.

  1. wise

    wise TPF Noob!

    Joined:
    Jul 25, 2008
    Messages:
    37
    Likes Received:
    0
    Location:
    Erfurt, Germany
    Can others edit my Photos:
    Photos NOT OK to edit
    Today I bought some flowers to make a few macro shots of them. And once again I was disappointed by my EF 100mm Macro lens. When I come really close to the object it gets overly soft. I really miss the sharpness in this lense at short distances. Of course the Dof is rather shallow when you are near life-size magnification, but there is not even the tiniest dot you could call sharp. I am not sure if it is really a problem of the lense or rather that of the lense combined with my 400D. I just saw some sample pictures of that lense mounted on a 10D, which were all tack sharp. Anyone here who has experiences with this combo: Canon EF 100mm f/2.8 USM Macro on a 400D? Or any idea why I just don`t get sharp pics with this lense?
     
  2. McQueen278

    McQueen278 TPF Noob!

    Joined:
    Mar 24, 2008
    Messages:
    388
    Likes Received:
    0
    Location:
    Ann Arbor, MI.
    Can others edit my Photos:
    Photos NOT OK to edit
    What settings are you attempting to use? If you aren't using a tripod, you should be. That lens is considered by some to be the absolute sharpest lens in the EF lineup right now and there is nothing wrong with using it with a 400D.


    My suggestion is stop down to at least f/4 and use a tripod with 2 second self timer and mirror lock up. (I have no clue if the 400D has mirror lockup) You could also build yourself a macro ring flash.

    DIY Ring Flash Here
     
  3. Big Mike

    Big Mike I am Big, I am Mike Staff Member Supporting Member

    Joined:
    Dec 16, 2003
    Messages:
    33,817
    Likes Received:
    1,811
    Location:
    Edmonton
    Can others edit my Photos:
    Photos NOT OK to edit
    Also, are you getting too close...as in, closer than the lens is able to focus?
     
  4. keith204

    keith204 No longer a newbie, moving up!

    Joined:
    May 20, 2007
    Messages:
    1,643
    Likes Received:
    2
    Location:
    Bolivar, MO
    Can others edit my Photos:
    Photos OK to edit
    Keep in mind, that when you're taking macro shots, f/2.8 will have a TOO shallow DOF for most cases. When doing anything macro, I am hardly ever shooting larger than f/11. Be sure to use it in a well lit area, tighten that aperture, and use a tripod.
     
  5. wise

    wise TPF Noob!

    Joined:
    Jul 25, 2008
    Messages:
    37
    Likes Received:
    0
    Location:
    Erfurt, Germany
    Can others edit my Photos:
    Photos NOT OK to edit
    @Mc Queen: Yes, I think I will retry with a tripod. But I still think that even at the widest aperture at least something must be sharp. I used apertures from f/2.8 to f/4 as the lighting wasn`t sufficient for more stopping down.
    I was just thinking of buying me a ringflash for christmas, but when I don`t get sharp pictures with my lense there`s no use to it. Or will a higher aperture really help? At least I couldn`t see any difference between the shots made with f/2.8 and f/4, they were all unsharp. Well, I`ll see when I use the tripod.

    @Big Mike: No, I didn`t get too close. I wasn`t even at 1:1.

    @keith: Yes, I will try higher apertures with my tripod.
     
  6. Big Mike

    Big Mike I am Big, I am Mike Staff Member Supporting Member

    Joined:
    Dec 16, 2003
    Messages:
    33,817
    Likes Received:
    1,811
    Location:
    Edmonton
    Can others edit my Photos:
    Photos NOT OK to edit
    Is is possible that when shooting at F2.8 - F4, that your DOF is just too thin to make out where it's sharp? When you are getting really close, your DOF may only be a few mm or less.

    Do you have any examples to show us?
     
  7. Overread

    Overread has a hat around here somewhere Staff Member Supporting Member

    Joined:
    May 1, 2008
    Messages:
    23,087
    Likes Received:
    3,756
    Location:
    UK - England
    Can others edit my Photos:
    Photos OK to edit
    Depth of field at those ranges is very small - also what is your shutter speed - at macro work its very easy to get motion blur from very tiny movements.
    Some examples would help
     
  8. wise

    wise TPF Noob!

    Joined:
    Jul 25, 2008
    Messages:
    37
    Likes Received:
    0
    Location:
    Erfurt, Germany
    Can others edit my Photos:
    Photos NOT OK to edit
    Here is one example:

    [​IMG]
     
  9. wise

    wise TPF Noob!

    Joined:
    Jul 25, 2008
    Messages:
    37
    Likes Received:
    0
    Location:
    Erfurt, Germany
    Can others edit my Photos:
    Photos NOT OK to edit
    This one was shot at: 1/80s f/2.8.
     
  10. Big Mike

    Big Mike I am Big, I am Mike Staff Member Supporting Member

    Joined:
    Dec 16, 2003
    Messages:
    33,817
    Likes Received:
    1,811
    Location:
    Edmonton
    Can others edit my Photos:
    Photos NOT OK to edit
    Looks like there is a tiny sliver of DOF, near the end of the petals.

    1/80 isn't as fast as you would want with a 100mm lens...and macro shots probably accentuate camera shake blur.
     
  11. Overread

    Overread has a hat around here somewhere Staff Member Supporting Member

    Joined:
    May 1, 2008
    Messages:
    23,087
    Likes Received:
    3,756
    Location:
    UK - England
    Can others edit my Photos:
    Photos OK to edit
    focus looks like its right on the edge of the petals - it looks a little soft on this example, but that could just be resizing for the net ( I take it you did not sharpen again after resizing).

    If your looking for more flower to be in focus then your going to have to stop down more - if lighting is not enough for a fast enough shutter speed then tripod mount the camera (you said flowers were bought so I assume you can get them inside and secure - away from any wind) and try with a longer exposure.

    Try jumping to f13 you will notice more depth. If the depth is not enough for you you can try going larger though diffraction starts to take hold (somewhere after f16ish) and then you can end up losing sharpness in shots.
    If the aperture won't get you the depth then you can try moving back to a lesser magnification since that will give you a deeper depth of field - then you can crop creativly afterwards.
     
  12. wise

    wise TPF Noob!

    Joined:
    Jul 25, 2008
    Messages:
    37
    Likes Received:
    0
    Location:
    Erfurt, Germany
    Can others edit my Photos:
    Photos NOT OK to edit
    Here is another one:

    [​IMG]

    Shot at 1/15s f/3.5.

    I know that by rule I should at least shoot at 1/100s, but I had support for my elbows, and I am relatively sure that the blur is no motion blur.
     

Share This Page

Search tags for this page

canon 400d and ef 100mm macro 2.8